X= y-2 2x+3y=21 Solution_______

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asked Dec 23, 2017 113k views

1 Answer

Jahnna · Answer 1 · 2017-12-27T18:06:02+0000

x= y-2

2x+3y=21
⇒ 2(y-2)+3y=21
⇒ 2y-4+3y= 21 (distributive property)
⇒ (2y+3y)-4= 21 (combine like terms)
⇒ 5y= 21+4
⇒ 5y= 25
⇒ y= 25/5
⇒ y= 5

The final answer is y=5~

X= y-2 2x+3y=21 Solution_______

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